12 VOLT ELECTRICAL SYSTEM TROUBLESHOOTING PROCEDURES.

TM 9-2330-385-14

4-14. 12 VOLT ELECTRICAL SYSTEM TROUBLESHOOTING PROCEDURES.

This paragraph covers 12 volt electrical system troubleshooting procedures. The 12 Volt Electrical System Fault

Index, Table 4-4, lists faults for the 12 volt electrical system of the trailer. Refer to schematic, Figure FO-1 when

performing tests and corrective actions.

Table 4-4. 12 Volt Electrical System Fault Index

Fault

Page

Troubleshooting Procedure

Number

Front Side Marker Light Does Not Operate

4-122

........................................................

Rear Side Marker Light(s) Do Not Operate

4-132

......................................................

Rear Marker Light(s) Do Not Operate

4-140

.............................................................

Taillight(s) Do Not Operate

4-150

...........................................................................

Stoplight(s) Do Not Operate

4-166

..........................................................................

All Lights On Rear Of Trailer Do Not Operate

4-178

..................................................

Taillight And Stoplight Do Not Operate

4-182

...........................................................

Rear Side Marker Lights And Rear Marker Lights Do Not Operate

4-186

......................

All Marker Lights Do Not Operate

4-192

.................................................................

10.

All Trailer Lights Do Not Operate

4-198

..................................................................

11.

Front Side Marker Light(s) Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . .

4-202.2

12.

Rear Side Marker Light(s) Do Not Operate (S/N YB 6122-075 And Up)

..........

4-202.8

13.

Rear Marker Light(s) Do Not Operate (S/N YB 6122-075 And Up)

..............

4-202.14

14.

Taillight(s) Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . . . . . . . . . . . . . .

4-202.20

15.

Stoplight(s) Do Not Operate (S/N YB 6122-075 And Up)

......................

4-202.32

16.

All Lights On Rear Of Trailer Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . .

4-202.44

17.

Taillight And Stoplight Do Not Operate (S/N YB 6122-075 And Up)

4-202.48

.............

18.

Rear Side Marker Lights And Rear Marker Lights Do Not Operate

(S/N YB 6122-075 And Up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-202.52

19.

All Marker Lights Do Not Operate (S/N YB 6122-075 And Up)

.................

4-202.56

20.

All Trailer Lights Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . . . . . . . . .

4-202.64

4-121